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Air Conditioning Control System
AHC ADAPTER PAC-IF01AHC-J
Installation and Instructions Manual
WARNING or
Safety notes are marked with
CAUTION, depending on the severity of possible
consequences that may result when the instructions
are not followed exactly as stated.
Proper installation is important for your safety and
proper functioning of the units.
Thoroughly read the following safety precautions
prior to installation.
To ensure safety and proper operation of the unit, the
unit should only be installed by qualified personnel.
After reading this manual, pass the manual on to the
end user to retain for future reference.
The users should keep this manual for future reference
and refer to it as necessary. This manual should be
made available to those who repair or relocate the
units. Make sure that the manual is passed on to any
future air conditioning system users.
1.Safety precautions................................................................................ 3
2.Important notice.................................................................................... 9
3.Functions............................................................................................ 10
4.Package contents............................................................................... 12
5.Specifications...................................................................................... 13
5-1. Product specifications of AHC ADAPTER........................................... 13
5-2. External dimensions of AHC ADAPTER.............................................. 14
6.System configuration.......................................................................... 15
7.Installation procedures........................................................................ 16
7-1. Programming....................................................................................... 17
7-2. Installation........................................................................................... 18
7-2-1. Field-supplied items.................................................................. 19
7-2-2. Installation method.................................................................... 20
Method 1: Installation using L-fittings............................................... 21
Method 2: Installation using DIN rail................................................ 22
7-2-3. Wiring connections.................................................................... 24
7-2-3-1. Removing the cover to access the wiring........................... 24
7-2-3-2. Connecting functional ground wire..................................... 25
7-2-3-3. Connecting M-NET transmission cables............................ 26
7-2-3-4. Securing the cables in place.............................................. 27
7-2-3-5. Reinstalling the cover......................................................... 28
7-2-4. Connecting AHC ADAPTER with ALPHA2................................ 29
7-2-5. H/W information (Switch types and display contents)............... 32
7-2-6. Function selection (SW103)...................................................... 33
7-3. Initial settings and Test run.................................................................. 34
7-3-1. Initial settings............................................................................. 34
7-3-2. Test run...................................................................................... 35
7-3-3. Diagnostics with the LED light on the AHC ADAPTER circuit
board......................................................................................... 36
8.Error code list...................................................................................... 37
About Advanced HVAC CONTROLLER (AHC)
Advanced HVAC CONTROLLER (hereafter referred to as AHC) comprises of MITSUBISHI ELECTRIC’s AHC ADAPTER
(PAC-IF01AHC-J) and α2 SIMPLE APPLICATION CONTROLLER* (hereafter referred to as ALPHA2).
* ‌α2 SIMPLE APPLICATION CONTROLLER is one of the Programming Logic Controllers that are manufactured by
MITSUBISHI ELECTRIC CORPORATION.
AHC allows for the connection of MITSUBISHI ELECTRIC’s air conditioning network system (hereafter referred to as M-NET)
to other systems, which was not possible with the use of ALPHA2 alone. AHC provides the following functions.
1 ‌Controls external devices using the sensor data of the air conditioning units connected to M-NET.
2 ‌Interlocks the operation of air conditioning units and external devices that are connected to ALPHA2.
3 ‌Controls air conditioning units that are connected to M-NET.
4 ‌Allows for the combined use of the items 1-3 above.
5 ‌Monitors the input/output status of ALPHA2 via a remote controller or a centralized controller.
Compatible controllers [As of April 2013 (North America); June 2013 (outside North America)]
• Remote Controller: PAR-U01MEDU, PAR-U02MEDA
• Centralized Controller: EB-50GU-A, EB-50GU-J
* ‌Refer to the manual that came with ALPHA2 for information about ALPHA2.
* ‌The use of AHC ADAPTER requires either a remote controller or a centralized controller.
2
1. Safety precautions
●● Thoroughly read the following safety precautions prior to installation.
●● Observe these precautions carefully to ensure safety.
WARNING
Indicates a risk of death or serious injury.
CAUTION
Indicates a risk of injury or structural damage.
●● Nomenclature
(Prohibited actions)
(Do not touch)
(No water)
(No wet hands)
(Fire hazards)
(Electric shock hazards) (Injury hazards) (Important actions) (Grounding required)
●● After reading this manual, pass the manual on to the end user to retain for future reference.
●● The users should keep this manual for future reference and refer to it as necessary. This manual should be made available to
those who repair or relocate the units. Make sure that the manual is passed on to any future air conditioning system users.
All electric work must be performed by qualified personnel.
General precautions
WARNING
This appliance is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowledge,
unless they have been given supervision or instruction
concerning use of the appliance by a person responsible
for their safety.
Children should be supervised to ensure that they do not
play with the appliance.
Do not install AHC in a place where large amounts of
oil, steam, organic solvents, or corrosive gases, such as
sulfuric gas, are present or where acidic/alkaline solutions
or sprays are used frequently. These substances can
compromise the performance of AHC or cause certain
components of AHC to corrode, which can result in electric
shock, malfunctions, smoke, or fire.
3
To reduce the risk of injury or electric shock, before
spraying a chemical around AHC, stop the operation and
cover AHC.
To reduce the risk of electric shock, malfunctions, smoke
or fire, do not operate the switches/buttons or touch other
electrical parts with wet hands.
To reduce the risk of injury or electric shock, stop the
operation and switch off the power supply before cleaning,
maintaining, or inspecting AHC.
Properly install all required covers to keep moisture and
dust out of AHC. Dust accumulation and water can cause
electric shock, smoke, or fire.
To reduce the risk of shorting, current leakage, electric
shock, malfunctions, smoke, or fire, do not wash AHC with
water or any other liquid.
To reduce the risk of injury, keep children away while
installing, inspecting, or repairing AHC.
CAUTION
To reduce the risk of fire or explosion, do not place
flammable materials or use flammable sprays around AHC.
To reduce the risk of injury and electric shock, avoid
contact with sharp edges of certain parts.
To reduce the risk of damage to AHC, do not directly spray
insecticide or other flammable sprays on AHC.
To reduce the risk of injury, wear protective gear when
working on AHC.
Precautions during installation
WARNING
Do not install AHC where there is a risk of leaking
flammable gas.
If flammable gas accumulates around AHC, it may ignite
and cause a fire or explosion.
Properly dispose of the packing materials. Plastic bags
pose suffocation hazard to children.
To prevent injury, install AHC on a flat surface strong
enough to support its weight.
Take appropriate safety measures against earthquakes to
prevent AHC from causing injury.
4
CAUTION
To reduce the risk of shorting, current leakage, electric
shock, malfunctions, smoke, or fire, do not install AHC in a
place exposed to water or in a condensing environment.
AHC must be installed by qualified personnel according to
the instructions detailed in this manual.
Improper installation may result in electric shock or fire.
Precautions during wiring
WARNING
To reduce the risk of damage to AHC, malfunctions,
smoke, or fire, do not connect the power cable to the signal
terminal block.
To reduce the risk of current leakage, overheating, smoke,
or fire, use properly rated cables with adequate current
carrying capacity.
Properly secure the cables in place and provide adequate
slack in the cables so as not to stress the terminals.
Improperly connected cables may break, overheat, and
cause smoke or fire.
Proper grounding must be provided by a licensed
electrician.
Do not connect the protective ground wire to a gas pipe,
water pipe, lightning rod, or telephone wire. Improper
grounding may result in electric shock, smoke, fire, or
malfunction due to electrical noise interference.
To reduce the risk of injury or electric shock, switch off the
main power before performing electrical work.
All electric work must be performed by a qualified
electrician according to the local regulations, standards,
and the instructions detailed in this manual.
Capacity shortage to the power supply circuit or improper
installation may result in malfunction, electric shock,
smoke, or fire.
5
CAUTION
To reduce the risk of electric shock, shorting, or
malfunctions, keep wire pieces and sheath shavings out of
the terminal block.
To reduce the risk of electric shock, malfunctions, or fire,
seal the gap between the cable access holes with putty.
To reduce the risk of shorting, current leakage, electric
shock, or malfunctions, keep the cables out of contact with
the AHC edges.
Precautions for moving or repairing AHC
WARNING
CAUTION
AHC should be repaired or moved only by qualified
personnel. Do not disassemble or modify AHC.
Improper installation or repair may cause injury, electric
shock, or fire.
To reduce the risk of shorting, electric shock, fire, or
malfunction, do not touch the circuit board with tools or
with your hands, and do not allow dust to accumulate on
the circuit board.
Additional precautions
To avoid damage to AHC, use appropriate tools to install, inspect, or
repair AHC.
Take appropriate measures against electrical noise interference
when installing the air conditioners in hospitals or facilities with
radio communication capabilities.
Inverter, high-frequency medical, or wireless communication
equipment as well as power generators may cause the air
conditioning system to malfunction. Air conditioning system may
also adversely affect the operation of these types of equipment by
creating electrical noise.
AHC is designed for exclusive use with the Building Management
System by Mitsubishi Electric. The use of AHC for with other
systems or for other purposes may cause malfunctions.
6
To reduce the risk of erroneous signal output, malfunctions, and
resultant accidents, provide an external safety circuit to ensure a
safe operation of the entire system in case problems occur with
external power supply or with AHC.
To avoid malfunctions, do not bundle power cables and signal
cables together, or place them in the same metallic conduit.
To reduce the risk of electric shock, turn off the power to AHC
before installing or wiring AHC.
To reduce the risk of erroneous signal output, malfunctions, and
resultant accidents, turn on the power to AHC first before turning on
the power to external devices.
To avoid causing damage or fire, do not apply an AC voltage or a
voltage higher than 32 VDC to the M-NET or the power supply (24
VDC) terminal blocks on AHC ADAPTER.
To reduce the risk of smoke and fire that may result from
overcurrent continuously transmitted to the output circuit for an
extended period of time due to overload current above the rated
current or due to overload short-circuit, provide an external safety
circuit (e.g., fuse).
To avoid damage to AHC, do not overtighten the screws.
To avoid damage to AHC, do not make holes on the AHC cover.
Do not use solderless terminals to connect cables to the terminal
block. Solderless terminals may come in contact with the circuit
board and cause malfunctions.
When error signals are input through the Digital Input on ALPHA2,
controllers connected to M-NET will display the detection of an error
upon detection of an ON-signal at the Digital Input. Do not connect
a device that would output an ON-signal during normal operation
and an OFF-signal during an error. When connecting such devices,
reverse their circuits.
To avoid deformation and malfunction, do not install AHC in direct
sunlight or where the ambient temperature may exceed 55°C
(131°F) or drop below -10°C (14°F).
Do not install AHC on the panel door of the metal control box.
Vibrations or shocks to AHC may damage AHC or cause AHC to
fall.
To ensure proper operation, when temperature signals are
input through the Analog Input on ALPHA2, make sure that the
temperature unit (Celsius/Fahrenheit) settings on the ALPHA2
program and the dipswitch settings on the circuit board of AHC
ADAPTER match.
Do not use AHC for security or disaster prevention purposes. Have
a backup system ready in case of power outage or AHC malfunction
if AHC is to be used for these purposes.
Do not use AHC in the way that would put lives at risk.
Do not connect control or communication cables to the main circuit
or power wires, and do not run them in close proximity. To reduce
the risk of electrical noise interference and resultant malfunctions,
keep them apart by at least 100 mm.
7
Do not turn off the power to AHC or reset AHC while making the
settings. Doing so will corrupt the settings data on the Flash ROM
and require re-setting of data. It may also result in malfunctions.
When controlling heaters or pumps with AHC, a large current
(10 times the normal current) may pass through these units when
the output signal turns from OFF to ON. Select units that can
tolerate such current flow.
After the completion of initial setting, perform a test run and make
sure that the control settings and other settings are properly set and
that the system is functioning properly.
When controlling heaters or pumps with AHC by inputting error
signals from external devices through the Digital Input on ALPHA2,
a large current (10 times the normal current) may pass through
these units when the output signal turns from OFF to ON. Select
units that can tolerate such current flow.
Note: Be sure to read all the restrictions and cautionary notes in the technical manual that came with the AHC, and use AHC
correctly.
8
2. Important notice
• Read this manual before installing or using AHC, and follow all the instructions.
• This manual contains explanations and figures to help the user to properly install, program, and operate AHC.
• All the examples and figures contained in this manual are there for the sole purpose of clarification. It is not guaranteed
that AHC will properly work in the types of applications used as examples or are shown in figures. MITSUBISHI ELECTRIC
shall not be held responsible for any damage or loss that may result from the use of AHC in the manners shown in the
examples and figures contained in this manual.
• Thoroughly read the technical manual, and check the surrounding for safety before changing the settings of AHC in
operation (e.g., changing programs or parameters, forcing signal output, or changing the operation status).
9
3. Functions
AHC comprises of an ALPHA2 and an AHC ADAPTER. The use of AHC ADAPTER requires the use of ALPHA2.
The following ALPHA2 are compatible with AHC. Other types of ALPHA2 do not support AHC.
• AL2-14MR-A
• AL2-14MR-D
• AL2-24MR-A
• AL2-24MR-D
Compatible controllers [As of April 2013 (North America); June 2013 (outside North America)]
• Remote Controller: PAR-U01MEDU, PAR-U02MEDA
• Centralized Controller: EB-50GU-A, EB-50GU-J
AHC enables the connection of M-NET with other systems, which was not possible with the use of ALPHA2 alone. AHC
supports the functions listed in Table 1.
10
Table 1 AHC function list
AHC function
Example
Supplemental Inf.
‌ ontrols external devices
1 C
using the sensor data of
the air conditioning units
connected to M-NET.
●● External heaters are controlled, using the
temperature sensors on air conditioning units or
on remote controllers.
By using the sensor on the air
conditioning unit connected to the
M-NET, no other external sensors
will be required. *1
‌‌
the operation of
2 Interlocks
air conditioning units and
external devices that are
connected to ALPHA2.
●● The operation of external heaters is interlocked
with the operation of air conditioning units in
heating operation.
●● The operation of external humidifiers is
interlocked with up to 16 air conditioning units.
Humidifiers will go into operation whenever at
least one air conditioning unit is in operation.
Operation status data of a
maximum of 2 groups of units can
be simultaneously collected. Each
group can contain a maximum of 16
units.
Error status of a maximum of
50 units can be simultaneously
collected.
‌ ontrols air conditioning
3 C
units that are connected to
M-NET.
●● The ON/OFF operation of air conditioning units
is interlocked with the insertion/removal of a
card into or out of a card reader.
A maximum of 2 groups of units can
be simultaneously controlled. Each
group can contain a maximum of 16
units.
‌ llows for the combined
4 A
use of the items 1-3
above.
●● Drying operation of air conditioning units is
controlled, using the built-in humidity sensor on
the remote controller.
5 Monitors the input/output
status of ALPHA2 via a
remote controller or a
centralized controller.
*1 ‌The sensor on the air conditioning unit connected to the M-NET will collect data at 70-second intervals. If a real time control at intervals
shorter than 70 seconds is required, connect a sensor to the Analog Input on ALPHA2.
Note: For detailed information about the functions supported by AHC, refer to the technical manual that came with the AHC.
11
4. Package contents
The following items are included in the package of AHC ADAPTER.
Package contents
Qty.
1
AHC ADAPTER (PAC-IF01AHC-J)
1
2
L-fitting
2
3
DIN rail attachment
1
4
M3 (6 mm (1/4 in)) roundhead screw
(for fixing L-fittings 2 or DIN rail attachment 3)
4
5
Cable tie
1
6
Installation and Instructions Manual (this manual)
1
7
CD-ROM
Installation and Instructions Manual
Technical Manual (English only)
Basic AHC program
1
Note
●● The Installation and Instructions Manual is available in English, French, German, Italian, Russian, Spanish,
and Swedish.
●● The CD-ROM can only be played on a CD-drive or a DVD-drive. Do not attempt to play the CD-ROM on an
audio CD player as this may damage your ears and/or speakers.
●● Each document is in PDF format. Viewing documents requires a computer with Adobe ® Reader ® or
Adobe ® Acrobat ® installed. “Adobe ® Reader ®” and “Adobe ® Acrobat ®” are registered trademarks of
Adobe Systems Incorporated.
* ‌Other than the items listed above, some items must be field-supplied. Refer to section 7-2 "Installation" for details.
* ‌To fulfill all functions, ALPHA2 is required. ALPHA2 can be purchased on site. (sold separately)
* ‌Refer to the ALPHA2 manual for ALPHA2 performance and other options.
12
5. Specifications
5-1. Product specifications of AHC ADAPTER
Item
Power supply
Interface
Ambient
conditions
Specifications
M-NET
17–32 VDC
M-NET transmission terminal
Exclusively for connection to M-NET
Connector for ALPHA2
Exclusively for connection to ALPHA2
Temperature
Humidity
Operating
temperature range
-10°C – +55°C [+14°F – +131°F]
Storage
temperature range
-20°C – +60°C [-4°F – +140°F]
30%–90% RH (Non-condensing)
Dimensions (W × H × D)
116 × 90 × 40 mm
[4-9/16 × 3-1/2 × 1-9/16 in]
Weight
0.4 kg (0.9 lbs)
Installation conditions
Inside the metal control box
* To be used in a business office or similar environment
13
5-2. External dimensions of AHC ADAPTER
* ‌Refer to the ALPHA2 manual for the dimensions of ALPHA2.
Unit: mm (in)
90.00 [3-1/2]
52.50 [2-1/16]
116.00 [4-1/2]
139.00 [5-1/2]
159.00 [6-1/4]
40.00 [1-9/16]
AL2-CAB BOARD
37.50 [1-7/16]
500 [19-10/16]
Fig. 5-1
14
6. System configuration
The figure below only shows the transmission cable connections. Power cables are omitted.
Power (24 VDC)
Power supply unit
PAC-SC51KUA
(optional)
Centralized
controller
[000]
LAN
Indoor unit
RC
M-NET
Outdoor unit
Group 1
Group 2
AHC
ALPHA2
AHC
AHC
[051]
TB7
[001]
Outdoor units that
supply power
AHC
ADAPTER
ALPHA2
TB3
[002]
Remote controller
M-NET transmission cable
AHC ADAPTER
[003]
[201]
[004]
Numbers in the parentheses indicate
address numbers.
[005]
M-NET
M-NET
RC [101]
Outdoor unit
RC [103]
BC controller
Group 3
[056]
TB7
[057]
Units to which power is supplied
(e.g., indoor units, remote controllers, AHC)
TB3
[006]
[007]
[008]
[009]
RC [106]
Fig. 6-1
* ‌AHC ADAPTER requires either an outdoor unit or a power supply device as a power source.
* ‌The power consumption coefficient of AHC ADAPTER (PAC-IF01AHC-J) is "0.5."
If the total power supply that the units such as indoor units, remote controllers, and AHC require exceeds the outdoor unit's ability to supply power, a
Transmission booster (PAC-SF46EPA) will be required.
Outdoor unit
Transmission booster
Indoor unit
32
25
1 *1
Remote Controller
(PAR-U01MEDU, PAR-U02MEDA)
0.5
AHC ADAPTER
0.5
*1 "7" for P200 and P250 models
15
7. Installation procedures
The table below summarizes the procedures for using AHC.
Initial settings
Installation
and Test run
Programming
Steps
Location
Necessary tools
1 ‌Programming of ALPHA2 using
PC’s programming tool
Office
PC, programming tool (ALVLS Programming
Software)
2 ‌Programming verification
(simulation function) using PC’s
programming tool
Office
PC, programming tool
3 ‌Downloading the program to
ALPHA2
Office or
on site
ALPHA2 *1, ALPHA2-PC connection cable
(AL-232CAB) *2, PC, programming tool
4 ‌On-site installation of AHC
On site
AHC (ALPHA2 + AHC ADAPTER)
5 ‌Initial setting of AHC ADAPTER
using Maintenance Tool
On site
(office)
AHC, Maintenance Tool *3, PC, MN converter
(CMS-MNG) or Centralized Controller *4
6 ‌Test run
On site
AHC, Maintenance Tool *3, PC, MN converter
or Centralized Controller *4, ALPHA2-PC
connection cable, programming tool
Reference
section
7-1
7-2
7-3
*1 ‌Includes the power supply to ALPHA2. (A separate power supply is required for AC and DC types.)
*2 ‌ALPHA2-PC connection cable (AL-232CAB) is an optional part of ALPHA2. Refer to the ALPHA2 manual for details.
*3 ‌Use Maintenance Tool ver. 5.08 or later.
*4 ‌Systems with a Centralized Controller do not require an MN converter (LAN connection). Systems without a Centralized Controller require
an MN converter.
Note: For the details of installation process, refer to the technical manual that came with AHC.
16
7-1. Programming
12 Programming and programming verification (simulation function) of ALPHA2 using PC’s programming tool
Programming mode screen
Simulation mode screen
PC
* ‌Proper operation of what is shown on the programming screen above is not guaranteed.
3 Downloading the program to ALPHA2
PC
ALPHA2-PC connection cable
(AL-232CAB)
Program download
17
ALPHA2
7-2. Installation
‌4 On-site installation of AHC
To reduce the risk of shorting, current leakage, electric
shock, malfunctions, smoke, or fire, do not install AHC in a
place exposed to water or in a condensing environment.
To reduce the risk of electric shock, malfunctions, or fire,
seal the gap between the cable access holes with putty.
Do not install AHC on the panel door of the metal control box.
Vibrations or shocks to the controller may damage AHC or cause
AHC to fall.
To prevent injury, install AHC on a flat surface strong
enough to support its weight.
IMPORTANT
●● Leave the AL2-CAB BOARD (Fig. 5-1) wrapped in bubble wrap until after AHC ADAPTER has been installed in the
metal control box.
18
7-2-1. Field-supplied items
The following items are required to install AHC ADAPTER.
* ‌Two types of installation options (A and B in the table below) are available for AHC ADAPTER. Select the one that is best
suited for a given environment.
Field-supplied items
Specifications
A
Unit fixing screw
(required when using L-fittings)
M4 x 2 pcs.
B
DIN rail and fixing screw
(required when using DIN rails)
DIN rail width: 35 mm (1-13/32 in)
Applicable type (IEC 60715/DIN 60715): TH35-7.5Fe, TH35-7.5Al
Functional ground wire
* ‌Use a wire with an appropriate diameter so that the wire can be fixed with the
cable strap below the terminal block. A diameter of 10 mm is recommended.
Sleeved ring terminal
M3.5 ring terminal (for M-NET transmission cables (A, B, S))
M4 ring terminal (for functional ground wire)
Transmission cable
Type: Sheathed vinyl cable
● CVVS Min. 1.25 mm² (Min. AWG 16)
* ‌CPEVS: PE*1 insulated PVC*1 jacketed shielded communication cable
* ‌CVVS: PVC*1 insulated PVC*1 jacketed shielded control cable
* ‌Use cables with an appropriate diameter so that the cables can be fixed with the
cable strap below the terminal block. A diameter of 10 mm is recommended.
*1 PE: Polyethylene; PVC: Polyvinyl chloride
19
7-2-2. Installation method
AHC must be installed inside the metal control box.
Either the supplied L-fittings or DIN rail attachment can be used for the installation.
Leave adequate space between ALPHA2 and AHC ADAPTER as shown in the figure below so as not to strain the cables.
* ‌Secure the cable that connects ALPHA2 and AHC ADAPTER in place with the supplied cable tie regardless of whether
L-fittings or DIN rails are used. (Fig. 7-1 and Fig. 7-2)
90.00 [3-1/2]
Unit: mm (in)
90.00 [3-1/2]
116.00 [4-1/2]
116.00 [4-1/2]
Fig. 7-1
Fig. 7-2
20
Method 1: Installation using L-fittings
1. ‌Have a metal control box ready. (Minimum steel thickness: 1 mm (3/64 in))
2. ‌Attach the supplied two L-fittings to the AHC ADAPTER with the supplied M3 screws. (Fig. 7-3)
3. ‌Properly install the AHC ADAPTER with the M4 screws (field-supplied) horizontally inside the metal control box. (Fig. 7-3)
M3
(6 mm (1/4 in))
M4
XS
M3
(6 mm (1/4 in))
M4
Fig. 7-3
Note
●● Each L-fitting must be attached to the AHC ADAPTER with two M3 screws.
●● The AHC ADAPTER to which the L-fittings are attached must be fixed to the metal control box with total of two M4 screws
to prevent it from falling.
●● The surface on which the AHC ADAPTER will be installed needs to be strong enough to support its weight.
●● Fix the AHC ADAPTER in place with the dedicated fixtures if the AHC ADAPTER slides aside.
●● Leave the AL2-CAB BOARD (Fig. 5-1) wrapped in bubble wrap until after AHC ADAPTER has been installed in the metal
control box.
21
Method 2: Installation using DIN rail
1. ‌Have a metal control box ready. (Minimum steel thickness: 1 mm (3/64 in))
2. ‌Attach the supplied DIN rail attachment to the AHC ADAPTER with the supplied M3 screws. (Fig. 7-4)
3. ‌Properly mount the AHC ADAPTER on the DIN rail vertically. (Fig. 7-5 and Fig. 7-6)
DIN rail attachment
M3 (6 mm (1/4 in))
up
Fig. 7-4
Fig. 7-5
Note
●● The DIN rail attachment must be fixed to the AHC ADAPTER with four M3 screws.
●● The surface on which the AHC ADAPTER will be installed needs to be strong enough to support its weight.
●● Do not install the AHC ADAPTER where it may receive vibration. Use studs to fix the AHC ADAPTER as necessary.
●● Leave the AL2-CAB BOARD (Fig. 5-1) wrapped in bubble wrap until after AHC ADAPTER has been installed in the metal
control box.
22
[Mounting/removing the AHC ADAPTER on/from the DIN rail]
up
DIN rail
attachment
DIN rail
Mounting
Removing
Fig. 7-6
(1) Mounting
1. Hook the upper side of the attachment to the DIN rail.
2. Push the lower part of the AHC ADAPTER until it snaps into place.
Note
●● Ensure that the DIN rail attachment is fixed securely in place to the DIN rail.
(2) Removing
1. Push the AHC ADAPTER downwards.
2. Pull it up toward you.
23
7-2-3. Wiring connections
To reduce the risk of injury or electric shock, switch off the
main power before performing electrical work.
All electric work must be performed by a qualified
electrician according to the local regulations, standards,
and the instructions detailed in this manual.
Capacity shortage to the power supply circuit or improper
installation may result in malfunction, electric shock,
smoke, or fire.
To reduce the risk of damage to AHC, malfunctions,
smoke, or fire, do not connect the power cable to the signal
terminal block.
IMPORTANT
●● To avoid damage to AHC, do not connect an AC power cable to the terminal block.
●● Be careful not to injure your hands with sharp edges of the AHC ADAPTER cover.
7-2-3-1. Removing the cover to access the wiring
Unscrew the two screws on the cover to remove it as shown in the figure below.
XS
Fig. 7-7
24
7-2-3-2. Connecting functional ground wire
Connect an M4 ring terminal to the functional ground wire, and connect it to the ground terminal as shown in Fig. 7-8.
* ‌Tighten screws to a torque of 1.47 N•m.
Functional ground wire
Fig. 7-8
25
7-2-3-3. Connecting M-NET transmission cables
Connect the M-NET transmission cables as shown in Fig. 7-9.
(M-NET transmission cables A and B: Non-polarized; S: Shield)
* ‌Tighten terminal screws to a torque of 0.78 N•m.
* ‌When connecting two ring terminals to a
terminal, make sure the flat surfaces of the ring
terminals face each other.
Fig. 7-9
26
7-2-3-4. Securing the cables in place
Hold the M-NET transmission cable and functional ground wire with the cable strap so as not to strain the cable connections.
Unit: mm (in)
TYPE A
TYPE B
Place the oval hole on the
right.
15.00 [9/16]
3.00 [1/8]
Fig. 7-10
* Depending on the cable thickness, secure the cables in one of the two ways (TYPE A or B) shown above.
27
7-2-3-5. Reinstalling the cover
Reinstall the cover using the two screws that were unscrewed.
XS
Fig. 7-11
28
7-2-4. Connecting AHC ADAPTER with ALPHA2
Connecting AHC ADAPTER and ALPHA2 using an AL2-CAB BOARD that is built in inside the case
AL2-CAB BOARD
Case
Inside
Outside
CN02
For connection to cable from ALPHA2
CN01
Serial cable connector
Fig. 7-12
29
1. ‌Release screw A from ALPHA2.
2. ‌Carefully remove the factory-fitted ALPHA2 expansion port cover or
the special module cover.
3. ‌Install the AL2-CAB BOARD into the cavity, carefully placing the
cable from the AL2-CAB BOARD in the cable channel located on
the input terminal side.
Install
30
4.
4. ‌Attach the ALPHA2 expansion port cover or the special module
cover, taking care that the cover does not interfere with the AL2CAB BOARD.
5. ‌Tighten screw A to a torque of 0.4 N•m.
5.
6.
6. ‌Secure the cable in place with the cable tie.
31
7-2-5. H/W information (Switch types and display contents)
LED: Lit when energized/
Blinks during error
Dip switches (Function selection)
(SW103)
M-NET address switches
100’s digit
10’s digit
1’s digit
SW102
SW101
2
Fixed
Note
●● Refer to section 7-2-6 for function setting with Dip SW103.
●● Only the 10’s and the 1’s digits need to be set to set the addresses. (The 100’s digit is fixed to 2.)
●● Set the address switches to values between 201 and 250. (The 100’s digit is fixed to 2.) All values from 251 and up will
be treated as 250.
●● The factory setting for the address switches is 200. Do not leave it to 200, or the controller will not be able to display AHC
status.
32
7-2-6. Function selection (SW103)
Switch
SW103
Switch name
Function according to
the switch setting
OFF
ON
Switch setting timing
OFF
Notes
ON
1
Temperature unit
setting
Celsius (ºC)
Fahrenheit (ºF)
Before turning on the power
2
Emergency stop
setting
Disabled
Enabled
Before turning on the power
3
-
-
-
-
4
-
-
-
-
5
-
-
-
-
6
-
-
-
-
7
-
-
-
-
8
-
-
-
-
*1
Do not change the
switch settings.
*1 ‌If the switch is set to ON (Enabled), when the centralized controller receives emergency stop signal, the ALPHA2 program will stop, and
any output signal or operation signal from ALPHA2 will be ignored.
*2 ‌The settings indicated in the shaded cells are factory settings.
33
7-3. Initial settings and Test run
7-3-1. Initial settings
5 Initial setting of AHC ADAPTER using Maintenance Tool
(a) System without a Centralized Controller (MN converter connection)
M-NET
AHC Initializing Setting screen
AHC
ALPHA2
PC
AHC
ADAPTER
MN converter
(CMS-MNG)
USB cable
Initial Setting Data
(b) System with a Centralized Controller (LAN connection)
M-NET
AHC Initializing Setting screen
AHC
ALPHA2
PC
AHC
ADAPTER
Centralized
Controller
LAN cable
Initial Setting Data
34
7-3-2. Test run
6 Test run
M-NET
Indoor unit
AHC
ALPHA2
AHC
ADAPTER
Indoor unit
Indoor unit
Monitoring operation status
PC
ALPHA2-PC
connection cable
(AL-232CAB)
MN converter
or Centralized
Controller
USB cable or
LAN cable
Monitor mode screen
PC
ALPHA2’s internal state check
* ‌There are no problems connecting the same PC to ALPHA2 and to the M-NET.
35
Operation Status Monitor screen
on the Maintenance Tool
7-3-3. Diagnostics with the LED light on the AHC ADAPTER circuit board
LED status
Description
Lit
AHC ADAPTER is operating
properly.
Unlit
AHC ADAPTER is not
energized.
Blinking
AHC ADAPTER is in error.
Cause
Troubleshooting
Normal
Power is not supplied.
Check the voltage at the M-NET terminal
block.
AHC ADAPTER is in
failure.
Replace the AHC ADAPTER.
AHC is malfunctioning.
Check the error code that is displayed on the
controller, and take appropriate actions.
36
8. Error code list
When an error occurs within AHC, the error code will appear on the remote controller and the centralized controller, and the
LED indicator on the circuit board will blink.
The table below summarizes the types of errors that AHC detects.
Error code
Definitions
0101
Equipment abnormality in system (DI01)
0102
Equipment abnormality in system (DI02)
~
0115
Equipment abnormality in system (DI15)
0116
Equipment abnormality in system (EI01)
~
0119
Equipment abnormality in system (EI04)
0403
Serial transmission trouble
6600
M-NET communication error - Address duplicate
6601
M-NET communication error - Polarity unsettled
6602
M-NET communication error - Transmission processor hardware error
6603
M-NET communication error - Transmission line busy
6604
M-NET communication error - No ACK return
6605
M-NET communication error - No return of response frame
6606
M-NET communication error - Transmission processor communication error
7130
System abnormality - Different unit model error (Program compatibility error)
Note: For detailed information about the error codes and their definitions, refer to the technical manual that came with AHC.
37
38
Note:
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
39
This product is designed and intended for use in the residential, commercial and light-industrial environment.
The product at hand is based on the following EU regulations:
• Electromagnetic Compatibility Directive 2004/108/EC
• Restriction of Hazardous Substances 2011/65/EU
Please be sure to put the contact address/telephone number
on this manual before handing it to the customer.
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
WT06775X04